AlertDialog Message with List(Custom View)

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dialog_customview.xml

<?xml version="1.0" encoding="UTF-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:tools="http://schemas.android.com/tools"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:orientation="vertical" >

    <TextView

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:gravity="center"

        android:text="message description" />

    <View

        android:layout_width="match_parent"

        android:layout_height="1dp"

        android:background="?android:attr/listDivider" />

    <ListView

        android:id="@+id/list1"

        android:layout_width="match_parent"

        android:layout_height="wrap_content" />

</LinearLayout>

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private Dialog mDialog = null;

public void showDialog(){

    String[] itemArray = getItemArray();

    AlertDialog.Builder builder = new AlertDialog.Builder(mContext);

    LayoutInflater inflater = LayoutInflater.from(mContext);

    View customView = inflater.inflate(R.layout.dialog_customview, null);

    builder.setTitle("Message and List Dialog");

    ListView lv = (ListView)customView.findViewById(R.id.list1);

    lv.setAdapter(new ArrayAdapter<String>(mContext, android.R.layout.simple_list_item_single_choice, itemArray));

    lv.setChoiceMode(ListView.CHOICE_MODE_SINGLE);

    lv.setOnItemClickListener(mItemClickListener);

    builder.setView(customView);

    builder.setNegativeButton(R.string.cancel, new DialogInterface.OnClickListener(){

        @Override

        public void onClick(DialogInterface arg0, int arg1) {

        }

    });

    builder.setPositiveButton(R.string.ok, new DialogInterface.OnClickListener(){

        @Override

        public void onClick(DialogInterface arg0, int arg1) {

        }

    });

    mDialog = builder.create();

    mDialog.setCancelable(false);

    mDialog.setCanceledOnTouchOutside(false);

    mDialog.setOnShowListener(new OnShowListener(){

        @Override

        public void onShow(DialogInterface arg0) {

            setPositiveEnable(false);

        }

    });

    mDialog.setOnDismissListener(new OnDismissListener(){

        @Override

        public void onDismiss(DialogInterface arg0) {

            mDialog = null;

        }

    });

    //finally

    mDialog.show();

}

public void setPositiveButtonEnable(boolean isEnable){

    if(mDialog != null){

        Button btn = ((AlertDialog) mDialog).getButton(AlertDialog.BUTTON_POSITIVE);

        if(btn != null){

            btn.setEnabled(isEnable);

        }

    }

}